Do Aspirin, Vodka, or Soda Extend Cut-Flower Life? The Science vs. Home Remedies

Commercial floral preservatives contain sugar, acidifier, and biocide—research shows mixed results. Home brews (aspirin, lemon-lime soda, mouthwash, vodka, bleach) are popular but unproven. They rarely harm plants, but no peer-reviewed studies confirm they outperform plain water changed daily.

Stick with clean water, a fresh cut on stems, and cool temperatures for the longest vase life.